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<head>
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    <title>学生成绩管理系统</title>
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<body>
    <div class="container">
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        <main class="main-content">
            <!-- 左侧菜单栏 -->
            <aside class="sidebar">
                <ul class="menu">
                    <li><strong>学生信息管理</strong></li>
                    <li><a href="./pages/student_info_edit.html" target="contentFrame">● 学生信息编辑</a></li>
                    <li><a href="./pages/student_info_query.html" target="contentFrame">● 学生信息查询</a></li>
                    <li><a href="./pages/student_credit_sort.html" target="contentFrame">● 学生学分排序</a></li>

                    <li><strong>课程信息管理</strong></li>
                    <li><a href="./pages/course_info_add.html" target="contentFrame">● 课程信息录入</a></li>
                    <li><a href="./pages/course_info_query.html" target="contentFrame">● 课程信息查询</a></li>

                    <li><strong>成绩信息管理</strong></li>
                    <li><a href="./pages/student_score_enter.html" target="contentFrame">● 成绩信息录入</a></li>
                    <li><a href="./pages/student_search_score.html" target="contentFrame">● 学生成绩查询</a></li>
                    <li><a href="./pages/course_score_sort.html" target="contentFrame">● 课程成绩排序</a></li>
                    <li><a href="./pages/score_analysis.html" target="contentFrame">● 成绩分布分析</a></li>
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                <h3>nihao李大大</h3>
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